NOCTI - Electricity A

Using Ohm's Law, calculate the current flowing through a resistor of 10 ohms when a voltage of 20 volts is applied across it.

• 0.5 A

• 2 A

• 5 A

• 10 A

A circuit has a power supply of 50 volts and a current of 5 amperes. What is the power consumed by the circuit?

• 100 W

• 150 W

• 250 W

• 500 W

Calculate the voltage drop across a 5-ohm resistor when a current of 3 amperes flows through it.

• 8 V

• 10 V

• 15 V

• 20 V

In a series circuit with three resistors of 2 ohms, 3 ohms, and 5 ohms, what is the total resistance?

• 5 ohms

• 8 ohms

• 10 ohms

• 15 ohms

For a parallel circuit with two resistors of 6 ohms and 3 ohms, what is the equivalent resistance?

• 1 ohm

• 2 ohms

• 4 ohms

• 9 ohms

What is the frequency of AC current in most household circuits in the United States?

• 50 Hz

• 60 Hz

• 100 Hz

• 120 Hz

If a DC circuit has a voltage of 12 volts and a resistance of 4 ohms, what is the current flowing through the circuit?

• 1 A

• 2 A

• 3 A

• 4 A

In an AC circuit, the peak voltage is 170 volts. What is the RMS voltage?

• 120 V

• 150 V

• 170 V

• 240 V

A 100-watt light bulb is connected to a 120-volt power source. What is the current flowing through the bulb?

• 0.5 A

• 0.83 A

• 1.2 A

• 2 A

What is the total power consumed by two resistors of 4 ohms and 6 ohms connected in series to a 10-volt battery?

• 1 W

• 2 W

• 5 W

• 10 W